Read the following passage. Answer the questions according to the information given in the passage and the required words limit. Write your answers on your answer sheet. The worst US economic recession (萧条) in 70 years is forcing senior citizens out of retirement, leaving them fighting for jobs in a weak labor market or risking homelessness. A study by Experience Works, released on Tuesday, showed 46 percent of the 2,000 low income people over 55 years who participated needed to find work to keep their homes. Nearly half of them had been searching for work for more than a year. “These people are at the age where they understandably thought their job-searching years were behind them,” said Cynthia Metzler, president and CEO of Experience Works. “But here they are, many in their 60s, 70s and beyond, desperate to find work so they can keep a roof over their heads and food on the table.” According to the study, many of the participants had no intention of working past their 60th birthday, but had to change plans after being dismissed or following the death of the partner. Over a third of the participants had retired. Ninety percent of respondents 76 years and older planned to continue working for the next five years. Huge medical bills due to a personal illness or that of a spouse(配偶) were also reasons for coming out of retirement, the survey found. The longest and deepest economic slump since the 1930s is making finding a job for the low-income elderly workers a difficult challenge. The Experience Works study found that 46 percent of the elderly jobseekers were sometimes forced to choose between paying rent, buying food or medication. Almost three-quarters believed their age made it harder to compete for jobs with younger workers. “This study underscores calls for the need to create policies that remove barriers to employment for older workers and provide additional programs and services specifically aimed at helping older people re-enter the work force or remain working,” said Metzler. 1. What has caused the American retired senior citizens back to work?  (No more than 8 words) 2. Why is it hard for the elderly job seekers to find a job?  (No more than 13 words) 3. Use several words to describe the possible feelings of the elderly job seekers? (No more than 4 words) 4. What might be the solution to the problem according to the study?  (No more than 15 words)